Did you ever try Stadia on hardware similar to these laptops? I did, and to be honest I thought performance was excellent. On my Pixel Slate, my 2015 XPS13, and my M2 MacBook Air - all gave great performance with no observable lag or bandwidth issues, even when playing on WiFi and streaming Netflix at the same time over a 76Mb/s connection. The only time the experience degraded was, oddly, when using the Stadia-bundled Chromecast, which even had a wired connection.

Sadly, like basically everyone else, I never trusted Google enough to buy into the ecosystem - and consequently bought a grand total of 1 game.